colburn



' 2 'Sheets--Sheets 2. L. S. COLBURN.

Tenoning Blind Slats.

No. 82,802.v

l Patented Oct. 6,- 1868. I

@latten gita-ttes illaeitt Letters Ptztrnt No. 82,802, dated October 6,1868.

IMPROVEMENT yIii spar-MACHINES.

@In Srlntulc trium tu in tips trtltts "gnant mit mailling pitt of lipsume.

TO ALL WHOM I'l MAY CONCER:

Be it known that I, LYAIAN S. CLBURN, of Oberlin, in Lorain county, andState of Ohio, have invented certain new and useful Improvements -inSlat-d'lachines; and I-do hereby declare that the following is a full,clear, and exact des :ription of the same, reference beingdiad totheaccompanying drawings, through letters of reference inarlcczlthereon, forming part of this specification, and in which- Figure lrepresents front elevation of a' machine embracing my improvements.

Figure 2 is a plan or top ,view of' the same." i Y Figure 3 an endelevation', and

Figure 4 a vertical transverse 'section thereof, taken on the line n: xof fig. 1.

The same letters vof reference occurringi'on the several figures,indicate corresponding parts.

My invention relates to that class of machines used/'formatting to agiven length, and shaping or forming, the tenons on the ends ofslatsvfor window-blindm'and fcii 'ln's'erting the staple therein; and itconsists in tho construction of the heads for holding the slat'to bcoperated ou, in the manner of'presenting the work to the machine, so asto first saw oil' thecnds,v and then by rot ai il:`- against the cattws'o forni the pivots on its ends by a nevel combi/nation of devices;`inthe means foi-operating thcstaplcdnscifting mechanism automaticallyand in concert with said cutting and tnonin'g-mechanism;in'tlic'pciuliar'coinstruction ofthe feed-staple holdcr;

and in the device for supporting the stuff against the lateral' force ofthe staple-driver.

To enable others to make and use my invention, I'will proceedtoi'dcscribe its construction and operation by referring tothevdrawings, in which A represents the mainframe' of the machine. Thoupper portion sonie what resembles the bed-frame of an ordinary lathe,supported on suitable legs, and is pro-vided with `journalbearings, ci,in which the driving-shaftl B is supported and'rot'iat'e's. On thisshaft is a long cylindrical drum, B', or, it may be, two separate drumssuitably located to'epei'atc the belts C. On one end of this shaft is. asmaller band-wheel D, the object of 'which will hereinafter appear. f

On thc upper portion of this frame A aresituated two heads; E, eachcarrying o, mandrel, a, provided with a band-wheel or pulley, l1, bywhich they are rotated'through the bands C, passing around the drum B.On each of these mnndrcls e are hung two circular'saws, m n, ol'different diameters, and having a plate, s, of steel, between them, theperiphery oi' which is formed into a series of chisel-edges, and is ofequal diameter with' the smaller saw, in, and of suitable thickness toform, with the saidsaw, the length of the tenons. 'lhcse saws mit, andthe chisel-plate s, are rmly attached to their respective` nian'drels,and are rotated therewith, and all in the same direction, by meansbefore described. l

Extending upwardly and outwardly from the 'rail A pf the frame A are twobrackets or supports F, in bearings in the upper ends of which, about ona level with the upper portion of the saws n, is .pivoted the shaft G,on which are firmly secured twoarins, II Hpfoa'rryin'g at theirextremity revolving holders I, tho one oo`rinccted with the arm H,havinga pinion-wheel, X, attachedv to it, by which it is rotated, by gearinginto the Sgmemal ,.ck J; which has@ partial ,-Omgm, n ltliigls'l'raftand is restrained from turning out of gear-with the pinion by the pin dbearing against either end of tlreh'otched portion of the hubf, whichlis rigidly keyed on the shaft G on one side of saidsegmentiil'rack J;the pin Z in the side ofthe rack, near its axis ofmotion,` bearingagainst the notched portieri of"tlic'lil1b`f,also Serving, lby turningthe shaft'G, to raise the arms H H' by depressing the handle-d'5 andthus to'lift' the workawayfrom the saws and hold the arms in asitable'position for removing the finished slatand inserting a blank tobe next operated on.

gg are two standards supported on ythe frame A,`on which rest thearms llll. They nre made adjustable vertically, by which` means the diameter ofthepivots on the ends of the slats is regulated.

Combined with this machine'is an apparatus for inserting the staple inthe finished slut automatically, and before it is taken out oftlle'holders before described, the f ic, K, of which is supported onth'e upper portion of the main frame A, transversely thereto, and aboutmidway between the heads E: 'It is constructed with suitable hprights,L', through apertnresin which a sliding bar, ilL'is supported; Said baris provided with two. armi Z lli the Olie @'Xly'ending upwardly, theother downwardly, forming a cross.' It 'also carries a sliding head,

N, which is limited in its inotion in one direction by a pin, p, passingthrough the har ill, and is supported in the opposite direction hy acoil-sning, fr', around an arm, which has freedom to slide through anaperture in arm I. 'Io the upper end of this head N is hinged thestaple-feeder I', which is so constrlictcd' as to hold the staples oneabove another, which, by their own weight, are fed downwaiwl, so thatthe lowest one is opposite n. guiding-aperture iu the i'ront of saidfeeder, and resting against the driver q in itsl rear.

To the bar )I is also attached a tappet.' r, extending downwardly, andwhich i.; operated on by the eccentricpin, f, on thc head, Q, of theshaft lt, which shaft has a rotary inotiorl communicated toit throughits pulley, T, and band, V, passing around the pulley D ou th'e end ofthe main driving-shaft ll, and through which devices u. sliding motion,intermittently, is communicated to the bar M, the receding motion ofsaid bar being controlled in part by a spiral spring, tu, around it, andin part by the spiral spring a', which latter encompasses a rod parallelwith the bar M attached to its arm l'. The opposite end of this rod issupported and guided in apertures in range therewith in the upright,Il', and in the lower end or tail portion of the supporting orrivetingbloch' W, which is hinged to the upright, L', above the bar M. iv

It will thus be seen that the spring :r performs a twofoldiunction, viz,to bear up tho block W against the edge of the slat while the staple isbeing driven, and to assist in carrying the bar M to its normal positionwhen the tappet r is released from gear with tho eccentric-pin t. y'

In operating this machine, the stuff having been firstflressed to thedesired width and thickness iu con# venient lengths, the handle J' isdepressed, so as to elevate the holders I clear of the saws. One endoi`=thc strip is passed through the aperture in said holders, (whichapertures are of corresponding shape and size with the cross-section ofthe shit, so that it inay lit snugly thereim) until the extreme endprotrudes sufficiently therethrough to form the tenen or pivot. Themandrels e are then rotated by any suitable motor through the drum B'and belts C, and the lever J' is allowedto rise gradually, when theweight of the arms H Il will causo tho slat to come in contact with thesaws n, by one of which the extreme end will be trimmed ofi, andvby theother the required length severed from the strip. The arms H H' nowresting on the standards g, by a further elevation of the lever J', therack J gearing into the pinion X, the stuif will be rotated against thcsaws m and chiselplates s, whereby the shoulders are` cut, and thotenori on each end rounded, simultaneously.

During this operation, the shaft R has been revolving slowly untilthe1eccentricpin l on the head Q has come in contact with the tappet r,bythe continuance of which revolution thersliding bar M is movedendwise, so as to bring the headN in contact with the edge of the slat,which has now ceased to revolve, and,I by the pressure oi the spring zon the lower portion of' the block W, it (the block) is caused to bearagainst the opposite side of the slat, when, by the continued motion ofthcbar M, the driver q, attached to its arm, Z, is forced through theaperture in the lower portion oi the staple-feeder P, at top ofthe headN, carrying with it a staple, which is thereby pressed into the edge of'the slat to a proper depth. The tappet r is then released from theeccentric-pin t by the continued revolution of the head Q, and the barvMis carried back, byy the force of the springs n; and z, to its normalposition, by which the driver q is withdrawn from the staple-feederP,land another staple falls in position to be next operated on. Thelever J' may then be depressed, and thc nishcd slat be withdrawn frenithe holders I for a repetition ci' the operation in like manner.

It should here bc'observed that a small groove is`cut in one of therevolving holders, I, along the aperture occupied by the slat, to allowthe staple in the edge of the slot to pass through said aperture.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The revolving heads I, constructed with apertures therethrough,corresponding with thc form of the' cross-section of the slat, for itsinsertion therein endwise, substantially as set forth.

2. The combination ofthe arms H H', carrying the revolving heads I, thewheel X, segmental rack J, and notched huhf, all supported on therock-shaft Gr,` for operation substantially as described. i

3. T he arrangement and combination of tho sliding bar M and head Nwiththeholding-block W, operating together by means of the wrist t, too r,and springs z z', substantially as shown and described.

4. The staple-holder, supported on the sliding head N, consisting of twovertical standards, p'p", provided with a. lower outlet at right anglesto their position, for the passage lof and to guido n. single staple,when propelled by the driver g, substantially as set forth.'m I l v L.s. COL'BURN.

I Witnesses: i A. R. HILLYEa,

L. L. WILLcu'rr.

